51040474 has 8 divisors (see below), whose sum is σ = 76635540. Its totient is φ = 25495296.

The previous prime is 51040471. The next prime is 51040481. The reversal of 51040474 is 47404015.

It can be written as a sum of positive squares in 2 ways, for example, as 48399849 + 2640625 = 6957^2 + 1625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51040474² = 5210259972289352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51040471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9799 + ... + 14074.

Almost surely, 2^51040474 is an apocalyptic number.

51040474 is a deficient number, since it is larger than the sum of its proper divisors (25595066).

51040474 is a wasteful number, since it uses less digits than its factorization.

51040474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24944.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 51040474 is about 7144.2616133510. The cubic root of 51040474 is about 370.9410522851.

Adding to 51040474 its reverse (47404015), we get a palindrome (98444489).

The spelling of 51040474 in words is "fifty-one million, forty thousand, four hundred seventy-four".